Bill Nye and Neil deGrasse Tyson just two smart people hanging out on the roof talking science.

Courtesy of the YouTube page:

"Dear Citizen of Planet Earth," 

That's how Carl Sagan addressed the public in an introductory letter about the Planetary Society back in the 1980s. Now Bill (CEO) and Neil (Board Member) reminisce about those days, talk about what we should call people from planet Earth, discuss how Neil's Cosmos TV show stressed Bill out, and tell us who will the first humans will be to orbit Mars.

You know sometimes I just post things because they make me smile.

This made me smile.

Watching these two great men "Nerding out" on that rooftop made me kind of wish I could have joined them.

Kinda reminded me of an episode of "The Big Bang Theory" actually.